206471355 has 8 divisors (see below), whose sum is σ = 330354192. Its totient is φ = 110118048.

The previous prime is 206471281. The next prime is 206471357. The reversal of 206471355 is 553174602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206471355 - 2¹² = 206467259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206471357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6882364 + ... + 6882393.

It is an arithmetic number, because the mean of its divisors is an integer number (41294274).

Almost surely, 2^206471355 is an apocalyptic number.

206471355 is a deficient number, since it is larger than the sum of its proper divisors (123882837).

206471355 is a wasteful number, since it uses less digits than its factorization.

206471355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13764765.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 206471355 is about 14369.1111416121. Note that the first 4 decimals coincide. The cubic root of 206471355 is about 591.0441674385.

The spelling of 206471355 in words is "two hundred six million, four hundred seventy-one thousand, three hundred fifty-five".